docs: updated use-case diagram

diagrams/use_case_diagram/use_case_diagram.puml

@@ -7,20 +7,21 @@ viewMovieDetail <.. rateMovie : <<extend>>
 
 "Unregistered User" as AnonUser
 AnonUser --> (List movies)
+AnonUser --> (List reviews)
+AnonUser --> (List movie persons)
+AnonUser --> (List movie roles)
 AnonUser --> viewMovieDetail
 AnonUser --> (Find similar movies\nbased on rating)
 
-usecase (Manage own ratings) as manageOwnRatings
-usecase (List own ratings) as listOwnRatings
-listOwnRatings <.. manageOwnRatings : <<extend>>
-
 "Registered User" as RegUser
 AnonUser <|-- RegUser
 RegUser --> rateMovie
-RegUser --> listOwnRatings
+RegUser --> (Manage own ratings)
 
 RegUser <|-- Admin
 Admin --> (Manage the list of movies)
 Admin --> (Manage categories)
+Admin --> (Manage persons)
+Admin --> (Manage movie roles)
 
 @enduml